Sadly being strong 1v1 and having a strong laning presence isn't enough. His team fight contribution if he's in equal or lower footing as the enemy's mid/carry is mediocre (besides dropping the ult bomb, which can lead to nothing).
i'm not a good OD player, not even close to it, but even pickoffs seem hard with him. More often than not I need help from a second player to kill a simple support.
Well part of his strength is that he can essentially crush any int mid and snowball on top of it. The only int mid that fares reasonably well vs him is pugna imo.
You get a huge lead in lane since the enemy mid can't compete with you with rightclick dmg so you should be able to get 100% lh and denies and you leave the lane vs an extremely underfarmed core vs you. Thats what makes him so strong.
What I meant was that his team fighting abilities aren't that impressive, especially when compared with other top picks mids like QoP, Storm, BM, etc..
How is OD's teamfight not impressive? sanity eclipse by itself is already impressive and the damage output is insane with refresher if you get items. Pure damage right-clicks and being able to take out an enemy hero for part of a fight or save an ally not to mention his passive that gives really good endurance to deathball pushes.